Transient dynamics of nonlinear magnetooptical rotation in the presence of transverse magnetic field
Abstract
Nonlinear magnetooptical rotation is studied under nonequilibrium conditions. The polarization rotation of linearly polarized light traversing a rubidium vapor cell is observed versus the timedependent (swept) longitudinal magnetic field in the presence of static transverse magnetic fields. Presence of the transverse fields modifies the character of the observed signals. In particular, for weaker transverse fields, field sweep leads twoharmonic oscillation of the polarization rotation while crossing zero. Unlike the steadystate, it was found that twofrequency oscillations observed in the transient signals, are independent of the transversefield direction. For stronger transverse fields, the oscillations deteriorate eventually reaching a situation when nooscillating dynamic signal, with distinct minimum close to zero field, is observed. Experimental results are supported with theoretical analysis based on the densitymatrix formalism. The analysis confirms all the features of experimental results while providing an provide intuitive explanation of the observed behavior based on angularmomentum probability surfaces used for densitymatrix visualization.
 Publication:

arXiv eprints
 Pub Date:
 April 2019
 DOI:
 10.48550/arXiv.1904.08753
 arXiv:
 arXiv:1904.08753
 Bibcode:
 2019arXiv190408753S
 Keywords:

 Physics  Atomic Physics;
 Physics  Optics
 EPrint:
 Phys. Rev. A 101, 033825 (2020)